868545 has 12 divisors (see below), whose sum is σ = 1505556. Its totient is φ = 463200.

The previous prime is 868537. The next prime is 868559. The reversal of 868545 is 545868.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 400689 + 467856 = 633^2 + 684^2 .

It is not a de Polignac number, because 868545 - 2³ = 868537 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9606 + ... + 9695.

It is an arithmetic number, because the mean of its divisors is an integer number (125463).

2⁸⁶⁸⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

868545 is a deficient number, since it is larger than the sum of its proper divisors (637011).

868545 is a wasteful number, since it uses less digits than its factorization.

868545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19312 (or 19309 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 868545 is about 931.9576170621. The cubic root of 868545 is about 95.4107789464.

The spelling of 868545 in words is "eight hundred sixty-eight thousand, five hundred forty-five".